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Tapered roller bearings are mainly subjected to radial and axial load. Bearing capacity depends on the outer ring of the roller angle, the greater the bearing capacity of the angle of view. This type of bearing is divided into two types, according to the number of columns in the bearing, the number of columns is divided into single row, double row and four row tapered roller bearings. Single row tapered roller bearing clearance to be adjusted during installation the user; double row and four row tapered roller bearing clearance have been in the factory according to user requirements given, do not need to adjust the user.
The tapered roller bearing is provided with a conical inner ring and an outer ring roller, and the tapered roller is arranged between the two. All projection lines on the cone surface are at the same point in the bearing axis. This design makes the tapered roller bearings especially suitable for bearing composite (radial and axial) loads. The axial load capacity of the bearing is mostly determined by the contact angle, the bigger the angle is, the higher the axial load capacity is. The E value is greater, the greater the E value, the greater the contact angle, the greater the applicability of the bearing under axial load.
Tapered roller bearings are usually separate type, that is, with the roller and cage assembly of the inner ring components of the inner cone assembly can be separated with the outer ring (outer).
Tapered roller bearings are widely used in automotive, rolling mill, mining, metallurgy, plastic machinery and other industries.
Tapered roller bearing in the installation process, the emergence of the scar of the main reasons is: bearing is device, when assembling the emergence of inner and outer rings of skew; perhaps is is assembling device and the process of the emergence of strikes, load, and ultimately the formation of scar to emerge in the bearing.
Is tapered roller bearing device to be in accordance with the job specification to stop, will not form many achievements, such as devices in the form or method not when, it will form a bearing rolling on the surface of the road surface and Gulu formed the emergence of linear bearing the scars. Device of deep groove ball bearings with indirect reaction precision, and use the function of bearing life.
Tapered roller bearings and other aspects of the quality, although it is relatively good, but the rolling bearings are precision components, its use must be carefully carried out accordingly. No matter how high the performance of the bearings, if used improperly, it will not be expected to high performance. Note on the use of bearings have the following several:
(1) to keep the tapered roller bearing and its surroundings clean.
Even the eyes can not see the small dust, but also will bring bad impact on the bearing. Therefore, to keep the surrounding clean, so that the dust does not cause intrusion bearing.
(2) use of caution.
In use to give a strong impact on the cone roller bearings, will produce scars and indentation, as the cause of the accident. In serious cases, will crack, fracture, so we must pay attention to.
(3) using appropriate tools.
To avoid using existing tools instead, you must use the appropriate tools.
(4) to pay attention to the corrosion of tapered roller bearings.
Operating bearing, the sweat on the hand will become the cause of rust. Should pay attention to the use of clean hands, it is best to try to bring gloves.
Tapered roller bearings use hearing to identify irregular running is a very common method, examples such as the use of electronic stethoscope abnormal noise of Chajuemou part is experienced operator to use. If the bearings are in good running condition will be issued a low hum sound, if issued a sharp hissing sound cone roller bearings, squeaky voice and other irregular sound, usually means that the bearings in the undesirable operating condition.
1, tile surface corrosion: spectral analysis of abnormal findings of the non-ferrous metal element concentration; iron spectrum appeared many non-ferrous metal components of submicron wear particles; excessive water content in lubricating oil, acid value is exceeded.
2, the shaft neck surface strain: iron spectrum, there are iron line cutting abrasive particles or black oxide particles, metal surface exists temper color.
3, a shaft neck surface corrosion: spectral analysis found that iron concentration anomaly and iron spectrum has many iron composition of submicron particles and lubricating oil excessive moisture or excessive acid.
4, surface strain: iron spectrum found in cutting, grinding grain composition of non-ferrous metals.
5, tile back fretting wear: spectral analysis found that abnormal concentrations of iron and iron spectrum has many submicron wear particles of iron components and lubricating oil water content and acid value anomaly.
Under the condition of liquid lubrication, the sliding surface is separated from the lubricating oil without direct contact, so the friction loss and the surface wear can be reduced greatly, and the oil film also has a certain vibration absorbing ability.
A sharp creak noise may be due to improper lubrication caused by. Improper bearing clearance can also cause metal sound. A dent in the tapered roller bearing outer ring orbit will be caused by vibration, and caused the smooth crisp sound, if the installation caused by the percussion scars can also generate noise, this noise will with high or low speed bearings and different. If intermittent noise, rolling elements may be damaged, the tapered roller bearing this sound is occurred in when the damaged surface is rolled out, bearing if contaminants often causes hissing sound, serious bearing damage will produce irregular and loud noise.
Bearing damage can be found through hearing, but usually at this time has been to the bearing must be replaced immediately. So, a better method of using, for example, such as electronic status monitoring instrument, tapered roller bearing pre eruption off the functioning of the bearing.
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